Static longitudinal and lateral-directional forces and moments were measured for elliptic- and crescent-wing models at high angles-of-attack in the NASA Langley 14 by 22-Ft Subsonic Tunnel. The forces and moments were obtained for an angle-of-attack range including stall and post-stall conditions at a Reynolds number based on the average wing chord of about 1.8 million. Flow-visualization photographs using a mixture of oil and titanium-dioxide were also taken for several incidence angles. The force and moment data and the flow-visualization results indicated that the crescent wing model with its highly swept tips produced much better high angle-of-attack aerodynamic characteristics than the elliptic model. Leading-edge separation-induced vortex flow over the highly swept tips of the crescent wing is thought to produce this improved behavior at high angles-of-attack. The unique planform design could result in safer and more efficient low-speed airplanes.


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    Titel :

    High angle-of-attack aerodynamic characteristics of crescent and elliptic wings


    Beteiligte:
    Vandam, C. P. (Autor:in)

    Erscheinungsdatum :

    1989-05-01


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :



    Aerodynamic characteristics of crescent and elliptic wings at high angles of attack

    VAN DAM / C. P. / VIJGEN, P. M. H. W. et al. | AIAA | 1991


    Aerodynamic characteristics of crescent and elliptic wings at high angles of attack

    Van Dam, C. P. / Vijgen, P. M. H. W. / Holmes, B. J. | NTRS | 1991


    High-alpha aerodynamic characteristics of crescent and elliptic wings

    VAN DAM, C. / VIJGEN, P. / HOLMES, B. | AIAA | 1989


    High-alpha aerodynamic characteristics of crescent and elliptic wings

    Van Dam, C. P. / Vijgen, P. M. H. W. / Holmes, B. J. | NTRS | 1989